Sash-lock.



J OJYARDLEY. SASH LOCK.

APPLICATION FILED AUG-17. |9|41 Patented Apr. 6, 1915. lvzggz I- llATTORNEY THE NORRIS PETERS C0. PHOTO LITHDH WASHINGTON. D- C.

M A f 1 m 5 1 m Z 2 a WITNESSES JOHN o,' YARDLEY, or srooigtron,CALIFORNIA.

sAsH-LooK.

To all whom it may concern:

Be it known that 1, JOHN O. YARDLEY. a

citizen of the United States; residing at Stockton, in the. county ofSan Joaquin, State of California, have invented certain new and usefulImprovements in Sash- -Locks; and I do declare the following to be aclear, full, and exact description of the same, such as will enableothers skilled in the art to which it appertains to make and use thesame, reference being had to the ac 'companying drawings, and to thecharacters of reference marked thereon, which form a part of thisapplication.

This invention relates to sash locks, the object of the invention beingto produce an automatic lock for one sash dependent upon the other sashbeing in a predetermined position. The bringing of one of said sashes tosuch predetermined position will automatically lock the other sash,

and so if the first named sash is likewise I provided with a lock atsuch predetermined position then when suchfirst named sash was in lockedposition it would automatically lock the other sash regardless of whatposition the other-sash might be in. Thus presuming that the upper sashwas provided with my improved locking means and the lower sash had anydesired form of look, by means of which it would be locked when inclosed position, then the uppersash might be left partly open for thepurpose of ventilation and still be locked provided the said lower sashwas in the aforesaid predeter I mined position. In this way those incare of the windows could readily ascertain if both sashes were lockedby merely throwing the lower sash to its closed locked position, whichaction would automatically lock the upper sash and thus obviate thenecessity of individual investigation of each window sep-' arately sincea glance at all the windows to determine if the lower sashes were insuch predetermined position would determine the question as to whetheror not the upper sashes were all. looked. The invention would likewisebe made strictly burglar proof in all respects.

A further object of the invention is to produce a simple yet one whichwill beexceedlngly efii'ectlve for the purposes for which it isdesigned.

These objects I accomplish by means of such structure and relativearrangement of p Specification of Letters Patent.

' Application filed August 17, 1314. Serial N 0. 857,139.

to improvements in locks for windows and particularly relates its edge.

and inexpensive device and of the following specification and claims- Inthe drawings similar characters of reference indicate correspondingparts in the several views.

Figure 1 is a front elevation of a window casing sash partly broken outand showing the adaptation of my new locking means thereto. Fig. 2 is afrontelevation of the locking lever for the upper sash. Fig. 3 is a sideelevation of the same. Fig. 1 is a fragmentary view of the juncture ofthe upper and lower sashes.

Referring now more particularly to the characters of reference onthedrawingsthe Patentediipr.6,19 15.

the parts willfully appear by a. perusal r numeral 1 designatesthewindowccasing, 2

the upper sash and the numeral 3 the lower sash movable therein whichsashes areboth provided with weights in the usual manner. L Whenever thelowersash 3 'is inits lower position in whichit may be locked in anysuitable manner the upper sash 2 is. likewise locked irrespectiveof whatits position may be whichl. last named locking operation is accomplishedby means of'the following structure, namelyfSet into one edge of thesash2 is a rack 10. In av plane with the normal junction, of the lower endof the sash. 2 and the upperoend of the sash 3 the casing 1 is providedwith afr'ecess 11 and P disposed within this recess 11 is a plate orother supporting means 12 fulcrumed in which is a lever 13. This lever13 has-1a projecting arm 14 on one side provided with rack teeth 15engageable with the rack 10. On the other end of the lever 13 is an arm16 engageable with'the upper edge of the sash 3 when such sash 3 is inits lowest position. lVhen such arm 16. is in engagement with the edgeofthe sash 3, as noted,

this through the medium of the lever 13 holds the rack teeth 15 inengagement with the rack 10 and locks the upper sash against movementirrespective of what position it may be in.

just below the point of engagementof the 1 arm 16 with the edge of thesash 3 when such sash 3 is in its lowest position, I have provided thesash 3 with a slot 17 cut into Thus when the sash3 is raised the arm 16can be moved into the slot 17 thus relieving the fixed position of thearm 14 so that with the movement of the sash. 2 the rack teeth 15 willbe thrown out of engagement with the rack 10 to permit such sash 2to bemoved at will. The upper end of the slot 17 is curved and provided witha wear plate 18 to prevent the frictional contact of the arm 16therewith from wearing the same to such an extent as to decrease theefficiency of the locking mechanism.

From the foregoing description it can readily be seen that with thelower sash at any raised position both sashes can be moved at will. withthe lower sash in its lowest position however, the upper sash isautomatically locked against movement irrespective of what position itmay be in.

From the foregoing description it will be readily seen that I haveproduced such a device as substantially fulfils the object of theinvention as set forth herein.

While this specification sets forth in de tail the present and preferredconstruction of the device, still in practice such deviations from suchdetail may be resorted to as do not form a departure from the spirit ofthe invention.

Having thus described my invention what I claim as new and useful anddesire to secure by Letters Patent is:

1. A device of the character described comprising the combination withan upper and a lower window sash, of a locking means for one of saidsashes, such locking means comprising a lever fulcrumecl independentlyof said sashes, an arm on each end of said lever, one of said sashesbeing provided with a slot ina portion of its length, a means normallyholding one of said arms in said slot to hold the other of said arms outof engagement with the other sash, said first named arm being engageablewith one terminal of said slot to force the other arm into engagementwith the other sash, as described.

2. A device of the character described comprising the combination withan upper and a lower window sash, of a lock for one of said sashes, suchlock comprising a rack on one of said sashes, a lever fulcrumedindependently of both sashes, an arm on one end of said lever engageablewith said rack, an arm on the other end of said lever engageable withthe other sash to cause said first named arm to engage said rack whenthe last named sash is in a predetermined position, as described.

8. A device of the character described comprising the combination withan upper and a lower sash, one of said sashes being provided with aslot, of a rack on the other sash, a lever fulcrumed independently ofboth sashes, an arm on each end of said lever, one of said armsprojecting normally into said slot and the other of said arms beingadapted to engage said rack when the first named arm engages theterminal of said slot, as described.

In testimony whereof I affix my signature in presence of two witnesses.

JOHN O. YARDLEY.

Witnesses:

JOSHUA B. WEBSTER, FLoYD M. BLANCHARD.

C'opies of this patent may be obtained for five cents each, byaddressing the Commissioner of Patents,

- Washington, D. G.

